DE3148071C2 - Selbsttätige Belichtungseinrichtung für eine Kamera mit Lichtmessung durch das Objektiv - Google Patents
Selbsttätige Belichtungseinrichtung für eine Kamera mit Lichtmessung durch das ObjektivInfo
- Publication number
- DE3148071C2 DE3148071C2 DE3148071A DE3148071A DE3148071C2 DE 3148071 C2 DE3148071 C2 DE 3148071C2 DE 3148071 A DE3148071 A DE 3148071A DE 3148071 A DE3148071 A DE 3148071A DE 3148071 C2 DE3148071 C2 DE 3148071C2
- Authority
- DE
- Germany
- Prior art keywords
- circuit
- film
- shutter
- shutter curtain
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005259 measurement Methods 0.000 title claims description 28
- 238000002310 reflectometry Methods 0.000 claims description 33
- 230000006835 compression Effects 0.000 claims description 24
- 238000007906 compression Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 19
- 230000010354 integration Effects 0.000 claims description 17
- 238000012937 correction Methods 0.000 claims description 16
- 230000001419 dependent effect Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 claims 1
- 210000003296 saliva Anatomy 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 44
- 230000006870 function Effects 0.000 description 30
- 238000003860 storage Methods 0.000 description 16
- 230000008859 change Effects 0.000 description 10
- 230000004907 flux Effects 0.000 description 8
- 238000004804 winding Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 241000251730 Chondrichthyes Species 0.000 description 1
- 101001018064 Homo sapiens Lysosomal-trafficking regulator Proteins 0.000 description 1
- 102100033472 Lysosomal-trafficking regulator Human genes 0.000 description 1
- 235000010703 Modiola caroliniana Nutrition 0.000 description 1
- 244000038561 Modiola caroliniana Species 0.000 description 1
- 241000124033 Salix Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000009416 shuttering Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
- G03B7/081—Analogue circuits
- G03B7/083—Analogue circuits for control of exposure time
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
- G03B7/099—Arrangement of photoelectric elements in or on the camera
- G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera
- G03B7/0997—Through the lens [TTL] measuring
- G03B7/09971—Through the lens [TTL] measuring in mirror-reflex cameras
- G03B7/09974—Through the lens [TTL] measuring in mirror-reflex cameras using the film or shutter as sensor light reflecting member
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Control For Cameras (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17245280A JPS5796318A (en) | 1980-12-05 | 1980-12-05 | Automatic exposure control device of ttl direct photometric camera |
| JP56025759A JPS57139723A (en) | 1981-02-23 | 1981-02-23 | Automatic exposure controller of ttl direct measurement camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3148071A1 DE3148071A1 (de) | 1982-06-16 |
| DE3148071C2 true DE3148071C2 (de) | 1984-06-20 |
Family
ID=26363448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3148071A Expired DE3148071C2 (de) | 1980-12-05 | 1981-12-04 | Selbsttätige Belichtungseinrichtung für eine Kamera mit Lichtmessung durch das Objektiv |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4408852A (enExample) |
| DE (1) | DE3148071C2 (enExample) |
| FR (1) | FR2495790A1 (enExample) |
| GB (1) | GB2090005B (enExample) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4390258A (en) * | 1980-12-15 | 1983-06-28 | Olympus Optical Co. Ltd. | Photomeric circuit for camera |
| US4473744A (en) * | 1981-12-29 | 1984-09-25 | Olympus Optical Company, Ltd. | Photometric apparatus for camera |
| JPS6064580A (ja) * | 1983-09-19 | 1985-04-13 | Asahi Seimitsu Kk | Ｃｃｔｖカメラ用レンズの自動絞り制御装置 |
| JPS6069967A (ja) * | 1983-09-26 | 1985-04-20 | Asahi Seimitsu Kk | Ｃｃｔｖカメラ用レンズの自動絞り制御装置 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5127382A (enExample) * | 1974-07-02 | 1976-03-06 | Olympus Optical Co | |
| JPS5219525A (en) * | 1975-08-06 | 1977-02-14 | Minolta Camera Co Ltd | Ttl light measure circuit for the camera |
| DE2810907A1 (de) * | 1978-03-14 | 1979-09-27 | Rollei Werke Franke Heidecke | Fotografische kamera mit einer belichtungszeitautomatik |
| US4325615A (en) * | 1978-08-09 | 1982-04-20 | Minolta Camera Kabushiki Kaisha | Exposure control system for single lens reflex cameras |
| JPS55120015A (en) * | 1979-03-09 | 1980-09-16 | Olympus Optical Co Ltd | Reflection photometric device for focal plane shutter |
| JPS5697326A (en) * | 1979-12-31 | 1981-08-06 | Minolta Camera Co Ltd | Exposure time control device of camera |
-
1981
- 1981-11-19 US US06/322,853 patent/US4408852A/en not_active Expired - Fee Related
- 1981-11-26 FR FR8122159A patent/FR2495790A1/fr active Granted
- 1981-12-04 GB GB8136580A patent/GB2090005B/en not_active Expired
- 1981-12-04 DE DE3148071A patent/DE3148071C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2495790A1 (fr) | 1982-06-11 |
| DE3148071A1 (de) | 1982-06-16 |
| GB2090005A (en) | 1982-06-30 |
| US4408852A (en) | 1983-10-11 |
| GB2090005B (en) | 1984-03-21 |
| FR2495790B1 (enExample) | 1985-04-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |